Equillium, Inc.
EQ- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001746466
No open-market purchases or sales by Equillium, Inc. insiders were filed in the last 90 days; 60 institutions reported holding it in 13F filings for Q2 2026, worth $133.0M in total; no superinvestor holds it.
Holders of 5% or more of EQ
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Equillium, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Janus Henderson Group PLC | 13G/A | 9.99%6.08M shares | 0.00 ppfrom 9.99% | Dec 8, 20252 filings | Feb 6, 2026 | SEC |
| Adage Capital Management, L.P. | 13G | 9.99%6.01M shares | New | Nov 13, 20251 filing | Nov 13, 2025 | SEC |
| Ra Capital Management, L.P. | 13G | 9.90%6.48M shares | New | Mar 20, 20261 filing | Mar 20, 2026 | SEC |
| ADAR1 Capital Management, LLC | 13G | 9.90%6.19M shares | New | Nov 14, 20251 filing | Nov 14, 2025 | SEC |
| Woodline Partners LP | 13G | 5.90%3.51M shares | New | Nov 14, 20251 filing | Nov 14, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
6 Schedule 13D and 13G filings on Equillium, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Mar 20, 20264:13 PM ET | Ra Capital Management, L.P.and 3 others | 13G | 9.90%6.48M shares | New | Mar 13, 2026 | SEC |
| Feb 6, 20264:32 PM ET | Janus Henderson Group PLC | 13G/A | 9.99%6.08M shares | 0.00 ppfrom 9.99% | Jan 30, 2026 | SEC |
| Dec 8, 202511:44 AM ET | Janus Henderson Group PLC | 13G | 9.99%6.08M shares | New | Nov 28, 2025 | SEC |
| Nov 14, 20257:45 PM ET | ADAR1 Capital Management, LLCand 2 others | 13G | 9.90%6.19M shares | New | Sep 30, 2025 | SEC |
| Nov 14, 20254:17 PM ET | Woodline Partners LP | 13G | 5.90%3.51M shares | New | Sep 30, 2025 | SEC |
| Nov 13, 20259:11 AM ET | Adage Capital Management, L.P.and 2 others | 13G | 9.99%6.01M shares | New | Sep 30, 2025 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Equillium, Inc. shares.
No Form 144 notices for Equillium, Inc. are on file.